1222120021211 has 8 divisors (see below), whose sum is σ = 1232231929344. Its totient is φ = 1212015752640.

The previous prime is 1222120021147. The next prime is 1222120021223. The reversal of 1222120021211 is 1121200212221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222120021211 - 2⁶ = 1222120021147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222120021211.

It is not an unprimeable number, because it can be changed into a prime (1222120021261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1588400 + ... + 2228733.

It is an arithmetic number, because the mean of its divisors is an integer number (154028991168).

Almost surely, 2^{1222120021211} is an apocalyptic number.

1222120021211 is a deficient number, since it is larger than the sum of its proper divisors (10111908133).

1222120021211 is a wasteful number, since it uses less digits than its factorization.

1222120021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3819781.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1222120021211 its reverse (1121200212221), we get a palindrome (2343320233432).

The spelling of 1222120021211 in words is "one trillion, two hundred twenty-two billion, one hundred twenty million, twenty-one thousand, two hundred eleven".